Life often seems to be a (21) to see who is faster, stronger, or smarter. Wining is very important (22) it affects our status and income. Athletes can see big increases in their incomes when they win. In school, students compete for grades and awards. At work, employees compete for (23) . They must help their companies deliver new and better products and services if they want to achieve success. All of this comes (24) , and the bill is usually paid for in time, effort, and health. Great effort plus the fear for falling behind can make people sick, and it is the root of many (25) in modern society.